cis-kuldeep/PyBitmessage-2021-04-27
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enable delayed POW checks

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enable delayed POW checks via optional "receive time" argument
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f97ada87 2018-05-23 03:38:05 +00:00 committed by GitHub
parent 74ddda8775
commit 609a4a92e2
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1 changed files with 3 additions and 2 deletions
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src/protocol.py
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@ -168,13 +168,14 @@ def checkSocksIP(host):
def isProofOfWorkSufficient(data, def isProofOfWorkSufficient(data,
nonceTrialsPerByte=0, nonceTrialsPerByte=0,
payloadLengthExtraBytes=0): payloadLengthExtraBytes=0,
recvTime=0):
if nonceTrialsPerByte < defaults.networkDefaultProofOfWorkNonceTrialsPerByte: if nonceTrialsPerByte < defaults.networkDefaultProofOfWorkNonceTrialsPerByte:
nonceTrialsPerByte = defaults.networkDefaultProofOfWorkNonceTrialsPerByte nonceTrialsPerByte = defaults.networkDefaultProofOfWorkNonceTrialsPerByte
if payloadLengthExtraBytes < defaults.networkDefaultPayloadLengthExtraBytes: if payloadLengthExtraBytes < defaults.networkDefaultPayloadLengthExtraBytes:
payloadLengthExtraBytes = defaults.networkDefaultPayloadLengthExtraBytes payloadLengthExtraBytes = defaults.networkDefaultPayloadLengthExtraBytes
endOfLifeTime, = unpack('>Q', data[8:16]) endOfLifeTime, = unpack('>Q', data[8:16])
TTL = endOfLifeTime - int(time.time()) TTL = endOfLifeTime - (recvTime if recvTime else int(time.time()))
if TTL < 300: if TTL < 300:
TTL = 300 TTL = 300
POW, = unpack('>Q', hashlib.sha512(hashlib.sha512(data[ POW, = unpack('>Q', hashlib.sha512(hashlib.sha512(data[